Condition Assessment Scheme Guidance


Revised regulation 20 of MARPOL 73/78 Annex I, adopted by the Marine Environment Protection Committee by Resolution MEPC.95(46) and amended by Resolution MEPC.111(50), enters into force on 5 April 2005, and imposes certain pollution prevention measures for single hulled oil tankers. 


Regulation 20.6 in particular requires that Category 2 and 3 oil tankers of 15 years and over after their date of delivery should be subject to the Condition Assessment Scheme (CAS) adopted by the Marine Environment Protection Committee by Resolution MEPC.94(46), as amended by Resolutions MEPC.99(48) and MEPC.112(50).


Please note that in addition to the mandatory compliance with CAS required by Regulation 20.6, some flag/port states may require compliance with these requirements before the compliance dates prescribed by Regulation 20.6 in order to permit further trading under their flags and/or to their ports.


Lloyd's Register (LR) Group surveyors will be undertaking these CAS surveys as the Recognised Organisation (RO) on behalf of the ship's Flag Administration for those flags that have provided authority for carrying out these surveys.


To readily identify those ships that are known to require compliance with CAS, a Memorandum item has been added to the ship's survey status, further emphasising this requirement.


CAS is intended to complement the requirements of the Enhanced Survey Programme (ESP), and should be undertaken in conjunction with the Enhanced Survey Programme of Inspections, concurrent with intermediate or renewal surveys currently required by Resolution A.744(18), as amended.  The first such assessment should be carried out concurrent with the first scheduled Classification Intermediate or Special Survey due after 5 April 2005, or when the ship reached 15 years of age, whichever occurs later.


The requirements of CAS also apply to oil tankers subject to the provisions of regulation 20.7 where authorisation is requested for continued service beyond the anniversary of the date of delivery of the ship in 2010, and oil tankers of 5,000 tons deadweight and above and of 15 years and over after the date of delivery of the ship requiring to carry crude oil as cargo having a density at 15°C higher than 900 kg/m3 but lower than 945 kg/m3 in accordance with regulation 21.6.1.


Resolution MEPC.94(46) as amended requires that certain preparatory measures be undertaken prior to conducting the survey, as follows:






On completion of the survey the attending surveyors will issue an Interim Statement of Compliance valid for a period of 5 months, which will enable the completion of the CAS Final Report and verification by the Flag Administration, who will issue the final CAS Statement of Compliance.  Further CAS surveys will then be carried out at intervals of 5 years, following the same procedure described above.


In order to assist owners, in dealing with this requirement, the text of Resolutions 94(46), 99(48), 111(50) and 112(50), together with templates for the Survey Planning Questionnaire and Survey Plan, have been provided below.


Should you require further information regarding the CAS surveys, please contact your local LR Group Office in the first instance.


CAS Survey Planning Questionnaire


CAS Model Survey Plan


MEPC 94(46) – Condition Assessment Scheme


MEPC Resolution 99(48) – Amendments to the Condition Assessment Scheme


MEPC Resolution 111(50) – Amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ship, 1973


MEPC Resolution  112(50) – Amendments to the Condition Assessment Scheme